Reference: Schirmaier F and Philippsen P (1984) Identification of two genes coding for the translation elongation factor EF-1 alpha of S. cerevisiae. EMBO J 3(13):3311-5

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Abstract


The translation elongation factor EF-1 alpha of the yeast Saccharomyces cerevisiae is coded for by two genes, called TEF1 and TEF2. Both genes were cloned. TEF1 maps on chromosome II close to LYS2. The location of TEF2 is unknown. TEF2 alone is sufficient to promote growth of the cells as shown with a strain deleted for TEF1. TEF1 and TEF2 were originally identified as two strongly transcribed genes, which most likely code for an identical or nearly identical protein as judged from S1 nuclease protection experiments with mRNA-DNA hybrids. The DNA sequence analysis of TEF1 allowed the prediction of the protein sequence. This was shown, by a search in the Dayhoff protein data bank, to represent the translation elongation factor EF-1 alpha due to the striking similarity to EF-1 alpha from the shrimp Artemia. A search for TEF1 homologous sequences in several yeast species shows, in most cases, duplicated genes and a much higher sequence conservation than among genes encoding amino acid biosynthetic enzymes.

Reference Type
Journal Article | Research Support, Non-U.S. Gov't | Comparative Study
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Schirmaier F, Philippsen P
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